Cosmetic contact lens for color blindness

Abstract

The invention is directed to a contact lens for color blindness, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein the pupil section comprising a dye containing layer which is enclosed between two clear layers so that the dye cannot leach out, wherein the dye filters out the specific wavelength bands between 545 nm and 575 nm to correct color vision blindness; wherein the iris section having a colored, printed, opaque, intermittent pattern, said pattern comprising: an annular pattern of a color and at least at least one other colored patterns extending across a portion of the iris section selected from a group of patterns consisting of outermost starburst pattern, outer starburst pattern and inner starburst pattern

Description

[0001]The present invention generally relates to a cosmetic contact lens for color blindness with a cosmetic pattern around the optic zone to mask this appearance to create the appearance of blending in the corrective color with cosmetic iris pattern. The present invention also relates to a method for making cosmetic contact lens for color blindness.BACKGROUND OF THE INVENTION[0002]The prior art US499817 describes a soft corneal contact lens which improves the color discrimination of a color-blind person when applied to one eye only. Said lens comprising a clear, soft, corneal contact lens having on the central portion of its exterior surface a thin layer of red coloration characterized as being insoluble in water but soluble in aromatic hydrocarbon; light passing through the red layer having substantially all its transmissions above about 6000 Å; said red layer continuously covering substantially all the light normally admitted to the pupil of the eye during the daytime and being i...

AI Technical Summary

Benefits of technology

[0004]In one aspect, the invention provides a contact lens for color blindness, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein the pupil section comprising an ink layer containing a dye, wherein the ink layer is enclosed between two clear layers so that the dye cannot leach out, wherein the dye filters out the specific wavelength bands between 545 nm and 575 nm to correct color vision blindness; wherein the iris section having a colored, printed, opaque, intermittent pattern, said pattern comprising: a) an annular pattern of a color having a first shade, wherein the annular pattern is composed of colored dots which are opaque, and the annular pattern has a substantially even outer peripheral edge and a substantially even inner peripheral edge, and the outer peripheral edge can have a diameter of from about 13.5 mm to about 12.5 mm and the inner peripheral edge can have a diameter of from about 5 mm to about 7 mm, and at least at least one other colored patterns extending across a portion of the iris section selected from a group of patterns consisting of outermost starburst pattern, outer starburst pattern and inner starburst pattern, wherein the outermost starburst pattern comprising dots of a second shade, the outer starburst pattern comprising dots of a third shade and inner starburst pattern comprising dots of a fourth shade, wherein all four shades are either the same or different from each other shade, wherein sizes of the colored dots and / or amounts of space between the colored dots of the annular colored pattern are varied in a radially-controlled manner so that local colored dot coverage increases in a radial direction from the inner perimeter of the annular iris section to the outer perimeter of the annular iris section, wherein annular colored pattern has a size sufficient to cover the most or the whole iris of an eye to make changes to the color of the eye or enhance the color of the eye, and wherein the combination of the substantially-annular colored pattern and the other color patterns to mask the abnormal appearance from the viewer caused by red tint over the pupil by creating the appearance of blending in the corrective colors with the colored, printed, opaque, intermittent pattern of iris section.

Problems solved by technology

In these instances, only the central portion of the eye has a solid cover over the pupil creating an aesthetically undesirable look.

The main disadvantage of the prior art is the appearance of the wearer.

The pupil region is not a natural color and appears undesirable to an observer: in addition, the red coloration may leach out to packaging solution when the contact lens is stored in the package before purchasing or to cleaning solution between wearing, or to tear when wearing.

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